PLC control stepper motor is not the same as controlling servo motor.
Stepper motor driver is a controller used to control stepper motor, which acts like a frequency converter acting on an ordinary AC motor.
Servo motor drive is a kind of controller used to control servo motor, its role is similar to the frequency converter acting on ordinary AC motor, is a part of the servo system, mainly used in high-precision positioning system.
Generally, the servo motor is controlled by position, speed and torque to achieve high-precision transmission system positioning, which is currently a high-end product of transmission technology.
The difference between PLC control stepper motor and control servo motor is as follows:
1. The control accuracy is different: the step angle of two-phase hybrid stepper motor is generally 1.8° and 0.9°, and the step angle of five-phase hybrid stepper motor is generally 0.72° and 0.36°. The control accuracy of the servo motor is guaranteed by the rotary encoder at the rear end of the motor shaft.
2. Different speed requirements: stepper motor is suitable for low-speed occasions, and the speed adjustment range is small. The servo motor can control the speed of the occasion.
3. Different controllable reliability: the servo motor has a feedback signal, which can achieve high-reliability control.
4. The output torque requirements are different: the stepper motor generally has 130 frames, and the maximum output static torque is 50 N/m. The servo motor can have more than 180 frames and more than 60 N/m output torque.